Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 41, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 31, 2001, 4:00 AM CDT for DeWitt County, Lavaca County, Texas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 31, 2001, 4:00 AM CDT (09:00 UTC)
- Expired
- Aug 31, 2001, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties DeWitt County, TX, Lavaca County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 9.0 hours before the alert went out and 160 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3264 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 310900 FFWSAT FFWSAT TXC123-285-311300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 400 AM CDT FRI AUG 31 2001 THE NATIONAL WEATHER SERVICE HAS EXTENDED THE * FLASH FLOOD WARNING FOR... LAVACA DEWITT * UNTIL 800 AM CDT * AT 355 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM CUERO TO HALLETTSVILLE...MOVING NORTHEAST AT 10 MPH. NATIONAL WEATHER SERVICE DOPPLER RADARS HAVE ESTIMATED 4 TO 6 INCHES OF RAIN HAVE FALLEN OVER NORTHERN DEWITT COUNTRY IN THE PAST 3 HOURS...AND 3 TO 4 INCHES OF RAIN IN THE PAST 2 HOURS FROM YOAKUM TO HALLETTSVILLE IN LAVACA COUNTY. ADDITIONAL SHOWERS AND THUNDERSTORMS ALONG THE COASTAL PLAINS ARE MOVING NORTHEAST...AND WILL CONTINUE TO MOVE ACROSS THE AREAS DURING THE PREDAWN HOURS. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 2899 9764 2893 9730 2934 9667 2959 9709
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 1:55 AM CDT | Flash Flood Warning | EWX | DeWitt, Lavaca | 2 hr |
| Aug 31, 3:33 AM CDT | Flash Flood Warning | EWX | Gonzales | 3 hr |
| Aug 31, 4:43 AM CDT | Flash Flood Warning | EWX | Bexar, Caldwell, Comal, Guadalupe, Hays | 3 hr |
| Aug 31, 6:28 AM CDT | Flash Flood Warning | EWX | Gonzales | 3 hr |
| Aug 31, 7:37 AM CDT | Flash Flood Warning | EWX | Karnes | 113 min |
| Aug 31, 7:41 AM CDT | Flash Flood Warning | EWX | Bexar, Comal, Hays, Travis | 2 hr |
| Aug 31, 8:20 AM CDT | Flash Flood Warning | EWX | DeWitt, Lavaca | 3 hr |
| Aug 31, 8:32 AM CDT | Flash Flood Warning | EWX | Fayette | 2 hr |
| Aug 31, 9:25 AM CDT | Flash Flood Warning | EWX | Gonzales, Karnes | 3 hr |
| Aug 31, 10:55 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes, Lavaca | 2 hr |
| Aug 31, 12:50 PM CDT | Flash Flood Warning | EWX | DeWitt, Karnes, Lavaca | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.